Tag: Fagradalsfjall
Alas, Poor Grindavík: Iceland Eruption Commences in a Terrible Location
The Reykajanes volcanic system just gave Iceland an awful early Christmas present: a brand new eruption in nearly the worst possible spot. Alas, we can’t return it.
Aerial view of the eruption taken from a Civil Defense helicopter a few hours after the eruption started. Credit: Almannavarnadeild ríkislögreglustjóra
Iceland Eruption Nearly Inevitable; Grindavík Could Go Under Lava
Up til now, volcanic eruptions on Iceland’s Reykjanes Peninsula were benevolent tourist attractions. They put on pretty shows and confined themselves to remote, unpopulated areas, clustered around Fagradalsfjall. No important infrastructure was harmed. People got to hike up and safely experience the birth of a new volcano. It was as good as volcanic eruptions get.
Previous Fagradalsfall Eruption Sites. Credit: Icelandic Meteorological Office
Magma started intruding under Fagradalsfjall in September, just a couple of months after the end of its third eruption. Until late October, it didn’t look like things would get too exciting. But a seismic swarm started near the Blue Lagoon area just north of Grindavík late on the 24th and ramped up dramatically overnight. Over one thousand earthquakes, the largest a M4.5, were recorded overnight, most at a depth of around 5 kilometers. By the next day, the numbers had risen to 4,000, some as shallow as 2 kilometers. And the ground was beginning to deform.
On the 27th, horizontal ground displacement was already up to 2 centimeters, and a M4.0 was recorded just 2 kilometers north of Grindavík. Yikes.
But magma hadn’t started moving on up yet.
When Whirlwinds Meet Hot Lava: Lava Devils!
There are so many things to see while watching a livestream of a volcanic eruption. Lava fountains, spatter cones being built up and falling down, turbulence in lava flows… and lava devils?!
Yes, indeed! Keep your focus on the left in the video below, and you’ll see molten lava sucked up and flung about by a vigorous little whirlwind during Kilauea’s latest summit eruption: (more…)
Iceland Erupts! Geldingadalir’s Back, Baby, Yeah!
Iceland’s newest volcano is treating the Reykjanes Peninsula to a reprise in activity, and I’ve got all your volcano video needs covered right here. I was 95% sure this would happen when the eruption went on hiatus last year, and I’m so excited to see eruption activity resume. Hopefully it will behave as politely as last time, and avoid destroying any civilization while it treats us to a lava-ly* show.
First, Geology’s Hub’s announcement of the August 3rd reawakening:
Next up, one of my favorite Icelandic news sites broadcasts right from the edge of the eruption. (more…)
Iceland from the West to the South: A Meh Guide With Some Eye-Popping Mistakes
(This post first appeared on Patreon. To get early access, plus nifty extras, all while supporting Rosetta Stones, please click here.)
So of course with all of the Iceland Volcano excitement, I had to run out and buy a bunch of books on Icelandic geology. It’s actually not super easy to find affordable ones in English. So I was very pleased to find one published by Springer for a good price: Iceland from the West to the South by Wolfgang Fraedrich. Springer is all about science written by scientists. I was stoked.
I have now read it, and…I’m considerably less stoked.
Do You Want to Die by Volcano? Because This Is How You Die by Volcano
There is no such thing as a safe eruption. I just want to stress this up front. If a volcano is actively erupting, no matter how gently, it could easily kill you. The minimum safe distance is far away. Add another far to that away if you’re dealing with an explosive volcano, just to be sure. And stay out of valleys that are part of its drainage system!
The majority of the fatalities at Mount Loowit (St. Helens) during the May 18th, 1980 eruption took place outside of the Red Zone, in areas that would have been safe if she hadn’t blown out laterally.
Kilauea’s eruptions may seem more like photo ops than death dealers, but it’s actually the deadliest volcano in the United States.